Deepwater divers who searched inside a tour boat that sank off Hokkaido in April found no traces of the missing, local authorities said Thursday, as efforts continue to locate them after the accident left 14 people dead and 12 still unaccounted for.The divers will conclude the search as early as Friday, according to the Japan Coast Guard. It involved a special technique known as saturation diving, in which divers absorb a mix of oxygen and helium to adjust to the water pressure at the depth they intend to work at.The divers descended to depths of 100 meters through a submersible decompressi…READ FULL ARTICLE
